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The pie chart shows the main causes of land degradation around the world, and the table shows how these causes affected North America, Europe and Oceania in the 1990s.
Overall, over-grazing was the biggest cause of land degradation in the world. Europe had the highest percentage of degraded land, while North America had the lowest.
According to the pie chart, 35% of land degradation was caused by over-grazing. Deforestation was the second biggest cause at 30%, and over-cultivation was 28%. Other causes were only 7%.
The table shows that 23% of land in Europe was degraded, which was the highest figure. The main cause in Europe was deforestation at 9.8%, followed by over-cultivation at 7.7% and over-grazing at 5.5%. In Oceania, 13% of land was degraded, and most of it was because of over-grazing, at 11.3%. There was no over-cultivation in Oceania. North America had only 5% of degraded land, and the main cause was over-cultivation at 3.3%.